ABERDEEN, UK -- EV Offshore has developed a range of custom-designed subsea video cameras for monitoring abrasive cutting operations. The system was designed for a recent decommissioning project in the North Sea. The £75,000 ($103,905) contract to design, install, and operate the cuttings monitoring system offshore was carried out in three months.
In order to provide comprehensive monitoring during the operation, EVO delivered a subsea CCTV system. A total of 17 custom video camera systems, along with subsea Halogen lights, custom subsea cabling, and eight LCD video monitors, were supplied for engineers to view the subsea cutting activity in real time. By using the cameras to view the cuttings process, engineers were able to make certain that the cuts were clean, and that the cuttings had completely separated from the installation so that recovery to surface could be made without an over-pull from the crane.
The camera systems were engineered by EV Offshore to function in the harsh subsea environment, the company says. Every camera was Class II-insulated in order to meet electrical subsea operational standards and withstand the force of the back-scatter of particulates propelled during the high-pressure jetting of a cutting operation
The cameras were designed with internal variable LEDs and a variable focus control to ensure that images are sharp. In addition to the cameras, external halogen lights, subsea whip leads, and surface and subsea satellite interface junction boxes were supplied. In order to ensure that the equipment interfaced with the overall system, extensive integration with third party-supplied equipment was necessary, the company says. This included interface with subsea junction boxes, subsea control chests, and topside control units.